Hello!
I wanted to suggest a random game on here that I remember from a long time ago called Meal or No Meal.
https://pacdudegames.com/games/meal-or-no-meal/It's a fun spin-off of one of my favorite game shows ever, Deal or No Deal. You pick your random tray (1/26) and you keep picking trays with random mini games in between (ex: Plus/minus or Multipliers) that may or may not appear that can adjust your score. I think these mini games make it possible that your score could exceed 1 million if you end up with the $1,000,000 tray though it may be very unlikely. I could be wrong on that. You could even do so poorly and get unlucky on the mini games and end with a score in the negatives below 0.01.
The range should be from 1 to anything greater in scores. I think getting a 1 and submitting that is pretty funny.
Idk if it works but it does have the submit score button at the end when you finish the game and it is Ruffle compatible.
I might suggest more games on here, but this one came to mind because of the score variation, chance involved, and the weirdness of it.